Panstarrs comet - revisited

I decided today to play a little bit in Photoshop and see what I could do with one of the photos I took of the comet last week.
I adjusted the curves and levels a little bit, and I applied Color Dodge to the layers. This is the result:

I realised in my previous post I didn't write anything about the settings used to take the shot, so here they are:
Place: Fundulea, Romania
Camera: Canon 450D
Lens: Canon 75-300 mm zoom lens at f/5
Exposure: 10 sec
ISO: 1600
Mount: tripod